Subtract 49/35 from 21/45
1st number: 21/45, 2nd number: 1 14/35
21/45 - 49/35 is -14/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 35 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
21/45 = 21 × 7/45 × 7 = 147/315 - Likewise, for the 2nd fraction, since 35 × 9 = 315,
49/35 = 49 × 9/35 × 9 = 441/315 - Subtract the two like fractions:
147/315 - 441/315 = 147 - 441/315 = -294/315 - After reducing the fraction, the answer is -14/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/45-49/35 21/45-98/35 21/90-49/35 21/45-49/70 63/45-49/35